> "Oh, we can make the scrollbars in our web page auto-hide so PC users get the same experience as Mac users"

That's interesting. Our UI has scroll bars for sub-panels. On my Mac in FF, the scroll bar is always visible when there is overflow. Same screen on a co-worker's Chrome has the autohiding scroll bars even when there is overflow. So it feels more like a Chrome issue than a Windows issue, but I guess at this point in time we just assume everyone is using Chrome.